I think you all are missing something very obvious here.
Since when does a kid in high school have a true understanding of politcs.
Hell Im 30 with a PolySci degree from UCLA and consider myself pretty well read on the state of the nation and still I don't know enough about everything going on. Plus I have more common sense than to wear a "Look at me i am an attention whore" shirt.
The fact is High School kids for the most part only know what a teacher or their parents think about politcs.